CORRECTIONS TO: Ales, J. M., Farzin, F., Rossion, B., & Norcia, A. M. (2012). An objective method for measuring face detection thresholds using the sweep steady-state visual evoked response.
Journal of Vision, 12(10):18, 1–18,
https://doi.org/10.1167/jov.12.10.18.
The authors have noted two errors in Figures 13 and 14. The first error is a tabulation error leading to incorrect data being plotted and used for corresponding correlations. The second is that data were shown for a recording channel (91) that was not used in any of the other figures (they all used channel 96). Figures 13 and 14 and some corresponding text have been corrected in the article online.
Original Figures 13 and 14 and legends:
Corrected Figures 13 and 14 and legends:
Original text of the last paragraph of the Results:
Figure 13 shows the correlation between ssVEP thresholds derived as described above and psychophysical thresholds for each face exemplar. The ssVEP and psychophysical face detection thresholds were significantly correlated (R2 = 0.93; p < 1e-8). Figure 14 presents the same comparison across participants and here the correlation was also significant (R2 = 0.86, p < 0.001). The slopes of the regression lines were both close to 1, indicating a 1:1 relationship between ssVEP and perceptual sensitivity.
Figure 13 shows the correlation between ssVEP thresholds derived as described above and behavioral thresholds for each face exemplar. The ssVEP and psychophysical face detection thresholds were significantly correlated (Pearson's r = 0.52; p = 0.024), one-tailed. One of the face exemplars failed to yield a threshold (point plotted at VEP coherence level of 100), so we also calculated the more robust Kendall's tau correlation which was also significant (tau = 0.45; p = 0.012, one tailed). Figure 14 presents the same comparison across participants and here the correlations were also significant (r = 0.7829; p = 0.0037; tau = 0.689; p = 0.0038).
The slope of the regression line for the face image correlation was 0.89, indicating a close relationship between the absolute thresholds, but not for the subject correlations where the slope was 2.9.